43results about How to "Sufficient insulation distance" patented technology

A motor power distribution apparatus includes first insulating holders and second insulating holders. The first insulating holders are disposed to retain every other one of a plurality of stacked power distribution members that are unified by insert molding. The second insulating holders are disposed to retain power distribution members other than the power distribution members retained by the first insulating holders.

To provide an electromagnetic relay having a reduced size, high conductivity, a high insulating performance between two fixed contact terminals and between each of the fixed contact terminals and backstop, a small number of factors causing a failure, and high reliability of electric contact.An electromagnetic relay has an electromagnetic block provided with a movable contact spring 14 swung by current flowing in a coil, two fixed contact terminals 22 and 22′ each having a fixed contact, a backstop 23 having two movable contact abutment portions, and a base block 2 for retaining the above components. The base block 2 has a base portion 20 having substantially a rectangular shape, fixed contact terminal retaining portions 21 and 21′ extending vertically from two opposing sides of the rectangle so as to retain the two fixed contact terminals, and a backstop retaining portion 24 extending vertically from the center portion of one of the remaining two opposing sides of the rectangle.

An alloy type thermal fuse is provided in which a ternary Sn-In-Bi alloy is used, the operating temperature belongs to the range of 130 to 170 DEG C., the overload characteristic and the dielectric breakdown characteristic are excellent, the insulation stability after an operation can be sufficiently ensured, and thinning of a fuse element can be easily realized. A fuse element having an alloy composition in which Sn is larger than 43% and 70% or smaller, In is 0.5% or higher and 10% or lower, and a balance is Bi is used.

A turn signal switch for a vehicle includes: a resiliently urging means provided between a switch operating element and a switch case so as to urge the switch operating element toward a neutral position and a returned position. The resiliently urging means includes: a return plate having a guide recess which is provided at one end and against which abuts a first pin provided on the switch operating element, the return plate being slidably supported on the switch case; a pair of return springs exhibiting spring forces for urging the return plate in a direction to bring the pin into abutment against the guide recess. The guide recess is curved into a substantially triangular shape, and includes a valley and return cam faces on opposite sides of the valley. The return springs are provided on opposite sides of the valley and between the return plate and the switch case. Thus, it is possible to reduce the length of the turn signal switch in the direction of push-in / return of the switch operating element.

A motor power distribution apparatus includes first insulating holders and second insulating holders. The first insulating holders are disposed to retain every other one of a plurality of stacked power distribution members that are unified by insert molding. The second insulating holders are disposed to retain power distribution members other than the power distribution members retained by the first insulating holders.

Disclosed is a vacuum circuit breaker. As a plurality of components of main circuit units are integrally formed as one module by molding using epoxy, the main circuit units are easily fabricated, and assembly errors are prevented. Since the main circuit units are arranged to be symmetrical to each other based on a driving unit, an insulation distance between a switchgear and the main circuit units can be obtained without increasing a size of the switchgear. This may allow the main circuit units to be easily arranged at the right side or at the left side according to an installation state of the switchgear.

A turn signal switch for a vehicle includes: a resiliently urging means provided between a switch operating element and a switch case so as to urge the switch operating element toward a neutral position and a returned position. The resiliently urging means includes: a return plate having a guide recess which is provided at one end and against which abuts a first pin provided on the switch operating element, the return plate being slidably supported on the switch case; a pair of return springs exhibiting spring forces for urging the return plate in a direction to bring the pin into abutment against the guide recess. The guide recess is curved into a substantially triangular shape, and includes a valley and return cam faces on opposite sides of the valley. The return springs are provided on opposite sides of the valley and between the return plate and the switch case. Thus, it is possible to reduce the length of the turn signal switch in the direction of push-in / return of the switch operating element.

A plug receptacle includes a housing having at least one outlet unit to which a plug is adapted to be connected to supply a DC power to the plug, and a cable, connected to the housing, for supplying the DC power to the housing. The outlet unit includes a plug- receiving portion having a plurality of substantially circular pin- inserting holes into which plug pins of the plug are inserted and an insertion groove formed to surround a periphery of the plug-receiving portion. The plug- receiving portion has a substantially quadrangular shape viewed from a front side thereof. The insertion groove is adapted to receive a surrounding wall of the plug and has a substantially quadrangular shape viewed from the front side. The pin-receiving holes are arranged along one side of the plug- receiving portion serving as a reference side and offset closer to the reference side than an opposite side to the reference side.

The gas-blast circuit breaker includes an electrically conductive vessel charged with insulating gases and kept at earth potential, a stationary arc-extinguishing chamber accommodated in a ground metal tank and corresponding to a moving part to extinguish an arc generated between it and the moving part, an insulating member that supports the stationary arc-extinguishing chamber to insulate the same from an earth potential portion, an opening provided on the ground metal tank, and a lid body that closes the opening provided on the ground metal tank and is arranged detachably on the opening from outside the ground metal tank, and one end of the insulating member is mounted to a mount provided on the lid body, and therefore a gas-blast circuit breaker is obtained to enable ensuring a sufficient insulation distance and appropriately and easily performing working of and a mount work of mount portions of an insulating member.

The invention discloses an anti-loose wire-clamping device used for a low-voltage electric appliance. The anti-loose wire-clamping device comprises a plate type clamp head and an adjustable fixing andconnecting device. The lower end of the plate type clamp head is connected with a shaft coupling through a rotation shaft. The shaft coupling is fixedly arranged on the inner wall of the adjustable fixing and connecting device. The left end of the adjustable fixing and connecting device is in hub connection with a fixing shaft. The plate type clamp head includes a stainless steel body, a moving clamping head and a static clamping head. A slide guide rail is arranged on the upper surface of the stainless steel body, the static clamping head is fixedly arranged on the left end of the slide guide rail, and the upper surface of the slide guide rail is in sliding connection with the moving clamping head. Through adoption of the adjustable fixing and connecting device, the entire anti-loose wire-clamping device can freely rotate 360 degrees, and has turning and fixing functions. Moreover, a control module is arranged inside the plate type clamp head to control joints to move, so the wire clamping control force is increased and over-tight or loosening situations during wire clamping can be overcame effectively.

A disc rotation type four-fracture vacuum arc extinguishing chamber is provided, wherein the vacuum arc extinguishing chamber is the disc rotation type four-fracture vacuum arc extinguishing chamber connected with an insulating shaft; one end of the insulating shaft is connected with an external driving motor or a rotating apparatus, the other end stretches into the vacuum arc extinguishing chamber and is connected with an insulating disc which is provided with conductor connection rods at both ends; movable contacts are arranged on the end faces of the conductor connection rods at both ends of the insulating disc; static contacts are arranged on the insulating outer wall; the movable contacts arranged on the end faces of the conductor connection rods at both ends of the insulating disc and corresponding static contacts respectively form two groups (four fractures); two fractures form one group and the fractures are arranged on one insulating disc in order to realize synchronous break; the fractures between groups are electrically insulated by the insulating disc; the insulating shaft drives the insulating disc and the movable contacts on the conductor connection rods to rotate, in this way, the movable contacts and the static contacts on the circumference of the insulating wall are effectively separated from each other so as to switch on and off the circuit. The invention uses the structure of four fractures in the same extinguishing chamber and the rotating movable contacts, the volume is small and the cost is low.

A method of fabricating a semiconductor device includes forming a lower wiring layer on a semiconductor substrate, forming an interlayer insulating film on the lower wiring layer, layer, forming a plurality of. contact plugs in the interlayer insulating film so that the contact plugs are brought into electrical contact with the lower wiring layer, thereby forming an interlayer wiring layer, forming an upper wiring, layer on the interlayer wiring layer so that the upper wiring layer is brought into electrical contact with the contact plugs, and patterning the upper wiring layer so that the upper wiring layer corresponds to the contact plugs. In the patterning, after the upper wiring layer has been etched, the exposed interlayer insulating film and the exposed contact plugs are etched.

The present invention relates to a high-voltage submersible motor and a waterproof connector for use in the submersible motor. The submersible motor includes a motor body (36), a power cable (37a), a cable contact (50) electrically connected to the power cable (37a), a cable-side insulating member (49) to which the cable contact (50) is liquid-tightly coupled, a motor contact (42) connected to the cable contact (50), a motor-side insulating member (41) to which the motor contact (42) is liquid-tightly coupled, and an insulating resin (93) that fills an enclosed space (60) formed between the cable-side insulating member (49) and the motor-side insulating member (41). A connecting portion of the cable contact (50) and the motor contact (42) is covered with the resin (93).

A capacitor discharger applied to a power conversion system including a DC voltage source, a power conversion circuit having a pair of input terminals via which the DC voltage source is electrically connected to the power conversion circuit, and a capacitor electrically connected between the pair of input terminals of the power conversion circuit. The capacitor discharger includes a first series connection of resistive elements and a second series connection of resistive elements. In the capacitor discharger, a parallel connection of the first and second series connections of resistive elements is electrically connected between the pair of input terminals of the power conversion circuit. This can ensure a discharge path for discharging the capacitor even in the presence of an abnormality in a portion of the parallel connection of the first and second series connections of resistive elements.

The present invention relates to the technical field of high-voltage power equipment, in particular to an outdoor high-voltage AC grounding switch with 1100KV opening and closing of super-B class induction current, including a main static contact, an auxiliary static contact, a main grounding knife, and a chassis , auxiliary moving contact, signal control box, arc extinguishing device, the main static contact and auxiliary static contact are arranged on the wiring board at the upper end of the switch, and the auxiliary moving contact is arranged on the side of the lower end of the active contact , the signal control box is provided with a switch, and the action of the main grounding knife rotating shaft drives the trigger device to trigger the switch of the arc extinguishing device. The present invention not only improves the safety performance of the grounding knife, but also has the advantages of simple and reasonable structure, stable transmission and high reliability. It effectively solves the problem of the induced current caused by the opening and closing of the 1100kV high-voltage AC grounding switch when the 1100kV grid frame is arranged with double-circuit lines on the same tower.

An electronic component and a mounting substrate thereof provide metal frames that reduce stress transmission while occupying only a limited mounting area. The electronic component includes a body, and first and second external electrodes respectively disposed on opposite ends of the body. A first metal frame includes a first support portion bonded to the first external electrode and a first mounting portion extending from a lower end of the first support portion toward the second external electrode. A second metal frame includes a second support portion bonded to the second external electrode and a second mounting portion extending form a lower end of the second support portion away from the first external electrode.

The invention relates to a cable terminal connecting device for GIS and a GIS. The cable terminal connection device for GIS includes: a cylinder body, which is provided with a cable terminal, a first static contact is electrically connected to the cable terminal, the cylinder body has a first cylinder opening and a second cylinder opening; an end cap is fixed on the second cylinder On the barrel mouth, it is used to block the second barrel mouth, and the end cap is removed during the withstand voltage test; the first insulator is fixed at the first barrel mouth, and the inner side of the insert is fixed with a second static contact, the second The static contact is used for conductive connection with the GIS body; the edge of the second insulator is fixed between the second barrel opening and the end cap, and the inner side of the insert on the second insulator is fixed with a contact seat; the moving contact is hinged on the On the contact seat, the moving contact has three working positions during the swinging process. In the first working position, the moving contact and the first static contact conduct conduction, and in the second working position, the moving contact and the first and second The two static contacts are both conducting, and the moving contact is conducting with the second static contact when in the third working position.

The invention relates to a dry ice cleaning vehicle of electrical equipment external insulation, belonging to the cleaning equipment of the electrical equipment external insulation. A lifter (7) is fixed on a vehicle body (8); the top end of the lifter (7) is provided with a lift platform (3) on which an insulation telescopic arm (2) is arranged; the telescopic end of the insulation telescopic arm (2) is connected with an automatic dry ice particle track sprinkler head assembly (1); and a dry ice conveying insulation duct (4-1) on a dry ice conveying device (4) is communicated with a sprinkler head (1-8) on the automatic dry ice particle track sprinkler head assembly (1). The invention has the advantages of compact structure, larger inclusive area for cleaned objects, almost no cleaning dead corner, large one-step cleaning surface, high cleaning quality, convenient operation and high dirt removal efficiency, thereby being especially suitable for the cleaning work of vertically arranged cylindrical insulating equipment, such as insulators or sleeve pipes. The invention can be used as high-efficiency cleaning equipment for safe electric power production and electric power supply guarantee and has favorable social and economic benefits.

The disc-type rotary four-break vacuum interrupter is characterized in that the vacuum interrupter is a disc-type rotary four-break vacuum interrupter connected with an insulating shaft. One end of the insulating shaft is connected to an external drive motor or rotating equipment, and the other One end extends into the vacuum interrupter and connects with the insulating disk with conductor connecting rods at both ends. The moving contact is set on the end surface of the conductor connecting rod at both ends of the insulating disk. The moving contact on the end surface of the end conductor connecting rod and the corresponding static contact form two groups of four fracture structures in total, each group has two fracture structures and is installed on an insulating disk to realize synchronous breaking. The insulating disc realizes electrical insulation, and the insulating shaft drives the moving contact on the insulating disc and the conductor connecting rod to rotate, so that the moving contact and the static contact located on the circumference of the insulating wall are effectively separated to complete the disconnection of the line. The invention adopts the four-fracture shared chamber and the rotary movable contact structure, and has the characteristics of small volume and low cost.